Site IGM-2280, Tlayúa Quarry: Late/Upper Albian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Sphenodontidae
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Ankylosphenodon pachyostosus n. gen., n. sp.
Reynoso 2000
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| IGM 7441 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Puebla |
| Coordinates: | 18.6° North, 97.9° West (view map) | ||
| Paleocoordinates: | 16.5° North, 64.2° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late/Upper Albian | ||
| Age range of interval: | 106.20000 - 100.50000 m.y. ago |
Stratigraphy
| Formation: | Tlayúa | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Middle Member. Cantu-Chapa (1987) recognized the genus Hysteroceras, Mortoniceras, and cf. Anisoceras, which represent a typical late Albian ammonite assemblage of the European zone, being similar to the Mortoniceras inflatum zone (Applegate et al., 2006). | |||||
Lithology and environment
| Primary lithology: | planar lamination,brown,yellow lithified lime mudstone |
| Lithology description: 35-meter sequence of honey-colored, micritic, laminated limestone, with characteristic red, hematitic limestone layers that bear a great diversity of invertebrates and vertebrates | |
| Environment: | lagoonal/restricted shallow subtidal |
Taphonomy
| Modes of preservation: | adpression |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Paleontological Museum of the Instituto de Geologia, Universidad Nacional Autonomia de Mexico (IGM UNAM) | |
Metadata
| Also known as: | Tlayua Quarry | ||
| Database number: | 221160 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2021-07-13 23:44:16 | Last modified: | 2022-07-01 11:35:10 |
| Access level: | the public | Released: | 2021-07-13 23:44:16 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 37244. | V. H. Reynoso. 2000. An unusual aquatic sphenodontian (Reptilia: Diapsida) from the Tlayua Formation (Albian), central Mexico. Journal of Paleontology 74:133-148 [R. Benson/R. Benson/P. Mannion] |
Secondary references:
| 82053 | V. H. Reynoso and J. A. Cruz. 2014. Mesozoic lepidosauromorphs of Mexico: a review and discussion of taxonomic assignments. In H. E. Rivera-Sylva, K. Carpenter, & E. Frey (eds.), Dinosaurs and Other Reptiles from the Mesozoic of Mexico 44-78 [M. Carrano/M. Carrano] |